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The makers’ fair opened in an hour, and Asha and Dev were decorating their paper-model stall. Each had brought what they called half a banner strip. Asha’s piece was longer. “We both brought a half,” Dev said. “How can one be bigger?” They placed the pieces side by side. The problem was small enough to hide beneath a flower decoration, but Asha stopped. “Before we cover it up, let’s work out what our halves mean.”
Talk together: Both children say “half”. What would you need to know before deciding whether their pieces should be the same size?


